Hello,
I recently tried to install a copy of Metro 2033 and right at the end of the installation process (via STEAM) an error message pops up stating that PhysXLoader.dll could not be found. Any help?
Un-install your physX drivers and either get the latest or re-install the ones that you got from your disks ( I'd prefer getting the latest ones from nvidia's website ) and then try opening the game again.